{-# LANGUAGE Safe #-}

{-# OPTIONS -fno-warn-orphans #-}

module Data.Time.Format.Parse.Instances (
    ) where

import Control.Applicative ((<|>))
import Data.Char
import Data.Fixed
import Data.List (elemIndex, find)
import Data.Ratio
import Data.Time.Calendar.CalendarDiffDays
import Data.Time.Calendar.Days
import Data.Time.Calendar.Gregorian
import Data.Time.Calendar.Month
import Data.Time.Calendar.OrdinalDate
import Data.Time.Calendar.Private (clipValid)
import Data.Time.Calendar.WeekDate
import Data.Time.Clock.Internal.DiffTime
import Data.Time.Clock.Internal.NominalDiffTime
import Data.Time.Clock.Internal.UTCTime
import Data.Time.Clock.Internal.UniversalTime
import Data.Time.Clock.POSIX
import Data.Time.Format.Locale
import Data.Time.Format.Parse.Class
import Data.Time.LocalTime.Internal.CalendarDiffTime
import Data.Time.LocalTime.Internal.LocalTime
import Data.Time.LocalTime.Internal.TimeOfDay
import Data.Time.LocalTime.Internal.TimeZone
import Data.Time.LocalTime.Internal.ZonedTime
import Data.Traversable
import Text.Read (readMaybe)

data DayComponent
    = DCCentury Integer -- century of all years
    | DCCenturyYear Integer -- 0-99, last two digits of both real years and week years
    | DCYearMonth MonthOfYear -- 1-12
    | DCMonthDay DayOfMonth -- 1-31
    | DCYearDay DayOfYear -- 1-366
    | DCWeekDay Int -- 1-7 (mon-sun)
    | DCYearWeek
        WeekType
        WeekOfYear -- 1-53 or 0-53

data WeekType
    = ISOWeek
    | SundayWeek
    | MondayWeek

makeDayComponent :: TimeLocale -> Char -> String -> Maybe [DayComponent]
makeDayComponent :: TimeLocale -> Char -> String -> Maybe [DayComponent]
makeDayComponent TimeLocale
l Char
c String
x = let
    ra :: (Read a) => Maybe a
    ra :: Maybe a
ra = String -> Maybe a
forall a. Read a => String -> Maybe a
readMaybe String
x
    zeroBasedListIndex :: [String] -> Maybe Int
    zeroBasedListIndex :: [String] -> Maybe Int
zeroBasedListIndex [String]
ss = String -> [String] -> Maybe Int
forall a. Eq a => a -> [a] -> Maybe Int
elemIndex ((Char -> Char) -> String -> String
forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toUpper String
x) ([String] -> Maybe Int) -> [String] -> Maybe Int
forall a b. (a -> b) -> a -> b
$ (String -> String) -> [String] -> [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ((Char -> Char) -> String -> String
forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toUpper) [String]
ss
    oneBasedListIndex :: [String] -> Maybe Int
    oneBasedListIndex :: [String] -> Maybe Int
oneBasedListIndex [String]
ss = do
        Int
index <- [String] -> Maybe Int
zeroBasedListIndex [String]
ss
        Int -> Maybe Int
forall (m :: * -> *) a. Monad m => a -> m a
return (Int -> Maybe Int) -> Int -> Maybe Int
forall a b. (a -> b) -> a -> b
$ Int
1 Int -> Int -> Int
forall a. Num a => a -> a -> a
+ Int
index
    in case Char
c of
        -- %C: century (all but the last two digits of the year), 00 - 99
        Char
'C' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCentury Integer
a]
        -- %f century (all but the last two digits of the year), 00 - 99
        Char
'f' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCentury Integer
a]
        -- %Y: year
        Char
'Y' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCentury (Integer
a Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`div` Integer
100), Integer -> DayComponent
DCCenturyYear (Integer
a Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`mod` Integer
100)]
        -- %G: year for Week Date format
        Char
'G' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCentury (Integer
a Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`div` Integer
100), Integer -> DayComponent
DCCenturyYear (Integer
a Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`mod` Integer
100)]
        -- %y: last two digits of year, 00 - 99
        Char
'y' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCenturyYear Integer
a]
        -- %g: last two digits of year for Week Date format, 00 - 99
        Char
'g' -> do
            Integer
a <- Maybe Integer
forall a. Read a => Maybe a
ra
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Integer -> DayComponent
DCCenturyYear Integer
a]
        -- %B: month name, long form (fst from months locale), January - December
        Char
'B' -> do
            Int
a <- [String] -> Maybe Int
oneBasedListIndex ([String] -> Maybe Int) -> [String] -> Maybe Int
forall a b. (a -> b) -> a -> b
$ ((String, String) -> String) -> [(String, String)] -> [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (String, String) -> String
forall a b. (a, b) -> a
fst ([(String, String)] -> [String]) -> [(String, String)] -> [String]
forall a b. (a -> b) -> a -> b
$ TimeLocale -> [(String, String)]
months TimeLocale
l
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCYearMonth Int
a]
        -- %b: month name, short form (snd from months locale), Jan - Dec
        Char
'b' -> do
            Int
a <- [String] -> Maybe Int
oneBasedListIndex ([String] -> Maybe Int) -> [String] -> Maybe Int
forall a b. (a -> b) -> a -> b
$ ((String, String) -> String) -> [(String, String)] -> [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (String, String) -> String
forall a b. (a, b) -> b
snd ([(String, String)] -> [String]) -> [(String, String)] -> [String]
forall a b. (a -> b) -> a -> b
$ TimeLocale -> [(String, String)]
months TimeLocale
l
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCYearMonth Int
a]
        -- %m: month of year, leading 0 as needed, 01 - 12
        Char
'm' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
12 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCYearMonth Int
a]
        -- %d: day of month, leading 0 as needed, 01 - 31
        Char
'd' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
31 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCMonthDay Int
a]
        -- %e: day of month, leading space as needed, 1 - 31
        Char
'e' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
31 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCMonthDay Int
a]
        -- %V: week for Week Date format, 01 - 53
        Char
'V' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
53 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [WeekType -> Int -> DayComponent
DCYearWeek WeekType
ISOWeek Int
a]
        -- %U: week number of year, where weeks start on Sunday (as sundayStartWeek), 00 - 53
        Char
'U' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
53 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [WeekType -> Int -> DayComponent
DCYearWeek WeekType
SundayWeek Int
a]
        -- %W: week number of year, where weeks start on Monday (as mondayStartWeek), 00 - 53
        Char
'W' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
53 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [WeekType -> Int -> DayComponent
DCYearWeek WeekType
MondayWeek Int
a]
        -- %u: day for Week Date format, 1 - 7
        Char
'u' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
7 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCWeekDay Int
a]
        -- %a: day of week, short form (snd from wDays locale), Sun - Sat
        Char
'a' -> do
            Int
a' <- [String] -> Maybe Int
zeroBasedListIndex ([String] -> Maybe Int) -> [String] -> Maybe Int
forall a b. (a -> b) -> a -> b
$ ((String, String) -> String) -> [(String, String)] -> [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (String, String) -> String
forall a b. (a, b) -> b
snd ([(String, String)] -> [String]) -> [(String, String)] -> [String]
forall a b. (a -> b) -> a -> b
$ TimeLocale -> [(String, String)]
wDays TimeLocale
l
            let
                a :: Int
a =
                    if Int
a' Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
0
                        then Int
7
                        else Int
a'
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCWeekDay Int
a]
        -- %A: day of week, long form (fst from wDays locale), Sunday - Saturday
        Char
'A' -> do
            Int
a' <- [String] -> Maybe Int
zeroBasedListIndex ([String] -> Maybe Int) -> [String] -> Maybe Int
forall a b. (a -> b) -> a -> b
$ ((String, String) -> String) -> [(String, String)] -> [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (String, String) -> String
forall a b. (a, b) -> a
fst ([(String, String)] -> [String]) -> [(String, String)] -> [String]
forall a b. (a -> b) -> a -> b
$ TimeLocale -> [(String, String)]
wDays TimeLocale
l
            let
                a :: Int
a =
                    if Int
a' Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
0
                        then Int
7
                        else Int
a'
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCWeekDay Int
a]
        -- %w: day of week number, 0 (= Sunday) - 6 (= Saturday)
        Char
'w' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a' <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
6 Int
raw
            let
                a :: Int
a =
                    if Int
a' Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
0
                        then Int
7
                        else Int
a'
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCWeekDay Int
a]
        -- %j: day of year for Ordinal Date format, 001 - 366
        Char
'j' -> do
            Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
            Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
366 Int
raw
            [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return [Int -> DayComponent
DCYearDay Int
a]
        -- unrecognised, pass on to other parsers
        Char
_ -> [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return []

makeDayComponents :: TimeLocale -> [(Char, String)] -> Maybe [DayComponent]
makeDayComponents :: TimeLocale -> [(Char, String)] -> Maybe [DayComponent]
makeDayComponents TimeLocale
l [(Char, String)]
pairs = do
    [[DayComponent]]
components <- [(Char, String)]
-> ((Char, String) -> Maybe [DayComponent])
-> Maybe [[DayComponent]]
forall (t :: * -> *) (f :: * -> *) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [(Char, String)]
pairs (((Char, String) -> Maybe [DayComponent])
 -> Maybe [[DayComponent]])
-> ((Char, String) -> Maybe [DayComponent])
-> Maybe [[DayComponent]]
forall a b. (a -> b) -> a -> b
$ \(Char
c, String
x) -> TimeLocale -> Char -> String -> Maybe [DayComponent]
makeDayComponent TimeLocale
l Char
c String
x
    [DayComponent] -> Maybe [DayComponent]
forall (m :: * -> *) a. Monad m => a -> m a
return ([DayComponent] -> Maybe [DayComponent])
-> [DayComponent] -> Maybe [DayComponent]
forall a b. (a -> b) -> a -> b
$ [[DayComponent]] -> [DayComponent]
forall (t :: * -> *) a. Foldable t => t [a] -> [a]
concat [[DayComponent]]
components

safeLast :: a -> [a] -> a
safeLast :: a -> [a] -> a
safeLast a
x [a]
xs = [a] -> a
forall a. [a] -> a
last (a
x a -> [a] -> [a]
forall a. a -> [a] -> [a]
: [a]
xs)

instance ParseTime Day where
    substituteTimeSpecifier :: Proxy Day -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy Day
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy Day
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy Day
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe Day
buildTime TimeLocale
l [(Char, String)]
pairs = do
        [DayComponent]
cs <- TimeLocale -> [(Char, String)] -> Maybe [DayComponent]
makeDayComponents TimeLocale
l [(Char, String)]
pairs
        -- 'Nothing' indicates a parse failure,
        -- while 'Just []' means no information
        let
            y :: Integer
y = let
                d :: Integer
d = Integer -> [Integer] -> Integer
forall a. a -> [a] -> a
safeLast Integer
70 [Integer
x | DCCenturyYear Integer
x <- [DayComponent]
cs]
                c :: Integer
c =
                    Integer -> [Integer] -> Integer
forall a. a -> [a] -> a
safeLast
                        ( if Integer
d Integer -> Integer -> Bool
forall a. Ord a => a -> a -> Bool
>= Integer
69
                            then Integer
19
                            else Integer
20
                        )
                        [Integer
x | DCCentury Integer
x <- [DayComponent]
cs]
                in Integer
100 Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
* Integer
c Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
+ Integer
d
            rest :: [DayComponent] -> Maybe Day
rest (DCYearMonth Int
m : [DayComponent]
_) = let
                d :: Int
d = Int -> [Int] -> Int
forall a. a -> [a] -> a
safeLast Int
1 [Int
x | DCMonthDay Int
x <- [DayComponent]
cs]
                in Integer -> Int -> Int -> Maybe Day
fromGregorianValid Integer
y Int
m Int
d
            rest (DCYearDay Int
d : [DayComponent]
_) = Integer -> Int -> Maybe Day
fromOrdinalDateValid Integer
y Int
d
            rest (DCYearWeek WeekType
wt Int
w : [DayComponent]
_) = let
                d :: Int
d = Int -> [Int] -> Int
forall a. a -> [a] -> a
safeLast Int
4 [Int
x | DCWeekDay Int
x <- [DayComponent]
cs]
                in case WeekType
wt of
                    WeekType
ISOWeek -> Integer -> Int -> Int -> Maybe Day
fromWeekDateValid Integer
y Int
w Int
d
                    WeekType
SundayWeek -> Integer -> Int -> Int -> Maybe Day
fromSundayStartWeekValid Integer
y Int
w (Int
d Int -> Int -> Int
forall a. Integral a => a -> a -> a
`mod` Int
7)
                    WeekType
MondayWeek -> Integer -> Int -> Int -> Maybe Day
fromMondayStartWeekValid Integer
y Int
w Int
d
            rest (DayComponent
_ : [DayComponent]
xs) = [DayComponent] -> Maybe Day
rest [DayComponent]
xs
            rest [] = [DayComponent] -> Maybe Day
rest [Int -> DayComponent
DCYearMonth Int
1]
        [DayComponent] -> Maybe Day
rest [DayComponent]
cs

instance ParseTime Month where
    substituteTimeSpecifier :: Proxy Month -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy Month
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy Month
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy Month
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe Month
buildTime TimeLocale
l [(Char, String)]
pairs = do
        [DayComponent]
cs <- TimeLocale -> [(Char, String)] -> Maybe [DayComponent]
makeDayComponents TimeLocale
l [(Char, String)]
pairs
        -- 'Nothing' indicates a parse failure,
        -- while 'Just []' means no information
        let
            y :: Integer
y = let
                d :: Integer
d = Integer -> [Integer] -> Integer
forall a. a -> [a] -> a
safeLast Integer
70 [Integer
x | DCCenturyYear Integer
x <- [DayComponent]
cs]
                c :: Integer
c =
                    Integer -> [Integer] -> Integer
forall a. a -> [a] -> a
safeLast
                        ( if Integer
d Integer -> Integer -> Bool
forall a. Ord a => a -> a -> Bool
>= Integer
69
                            then Integer
19
                            else Integer
20
                        )
                        [Integer
x | DCCentury Integer
x <- [DayComponent]
cs]
                in Integer
100 Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
* Integer
c Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
+ Integer
d
            rest :: [DayComponent] -> Maybe Month
rest (DCYearMonth Int
m : [DayComponent]
_) = Integer -> Int -> Maybe Month
fromYearMonthValid Integer
y Int
m
            rest (DayComponent
_ : [DayComponent]
xs) = [DayComponent] -> Maybe Month
rest [DayComponent]
xs
            rest [] = Integer -> Int -> Maybe Month
fromYearMonthValid Integer
y Int
1
        [DayComponent] -> Maybe Month
rest [DayComponent]
cs

mfoldl :: (Monad m) => (a -> b -> m a) -> m a -> [b] -> m a
mfoldl :: (a -> b -> m a) -> m a -> [b] -> m a
mfoldl a -> b -> m a
f = let
    mf :: m a -> b -> m a
mf m a
ma b
b = do
        a
a <- m a
ma
        a -> b -> m a
f a
a b
b
    in (m a -> b -> m a) -> m a -> [b] -> m a
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl m a -> b -> m a
mf

instance ParseTime TimeOfDay where
    substituteTimeSpecifier :: Proxy TimeOfDay -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy TimeOfDay
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy TimeOfDay
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy TimeOfDay
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe TimeOfDay
buildTime TimeLocale
l = let
        f :: TimeOfDay -> (Char, String) -> Maybe TimeOfDay
f t :: TimeOfDay
t@(TimeOfDay Int
h Int
m Pico
s) (Char
c, String
x) = let
            ra :: (Read a) => Maybe a
            ra :: Maybe a
ra = String -> Maybe a
forall a. Read a => String -> Maybe a
readMaybe String
x
            getAmPm :: Maybe TimeOfDay
getAmPm = let
                upx :: String
upx = (Char -> Char) -> String -> String
forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toUpper String
x
                (String
amStr, String
pmStr) = TimeLocale -> (String, String)
amPm TimeLocale
l
                in if String
upx String -> String -> Bool
forall a. Eq a => a -> a -> Bool
== String
amStr
                    then TimeOfDay -> Maybe TimeOfDay
forall a. a -> Maybe a
Just (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay (Int
h Int -> Int -> Int
forall a. Integral a => a -> a -> a
`mod` Int
12) Int
m Pico
s
                    else
                        if String
upx String -> String -> Bool
forall a. Eq a => a -> a -> Bool
== String
pmStr
                            then
                                TimeOfDay -> Maybe TimeOfDay
forall a. a -> Maybe a
Just (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$
                                    Int -> Int -> Pico -> TimeOfDay
TimeOfDay
                                        ( if Int
h Int -> Int -> Bool
forall a. Ord a => a -> a -> Bool
< Int
12
                                            then Int
h Int -> Int -> Int
forall a. Num a => a -> a -> a
+ Int
12
                                            else Int
h
                                        )
                                        Int
m
                                        Pico
s
                            else Maybe TimeOfDay
forall a. Maybe a
Nothing
            in case Char
c of
                Char
'P' -> Maybe TimeOfDay
getAmPm
                Char
'p' -> Maybe TimeOfDay
getAmPm
                Char
'H' -> do
                    Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
                    Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
23 Int
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
a Int
m Pico
s
                Char
'I' -> do
                    Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
                    Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
12 Int
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
a Int
m Pico
s
                Char
'k' -> do
                    Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
                    Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
23 Int
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
a Int
m Pico
s
                Char
'l' -> do
                    Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
                    Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
1 Int
12 Int
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
a Int
m Pico
s
                Char
'M' -> do
                    Int
raw <- Maybe Int
forall a. Read a => Maybe a
ra
                    Int
a <- Int -> Int -> Int -> Maybe Int
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Int
0 Int
59 Int
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
h Int
a Pico
s
                Char
'S' -> do
                    Integer
raw <- Maybe Integer
forall a. Read a => Maybe a
ra
                    Integer
a <- Integer -> Integer -> Integer -> Maybe Integer
forall t. Ord t => t -> t -> t -> Maybe t
clipValid Integer
0 Integer
60 Integer
raw
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
h Int
m (Integer -> Pico
forall a. Num a => Integer -> a
fromInteger Integer
a)
                Char
'q' -> do
                    Integer
ps <- (String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe (String -> Maybe Integer) -> String -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ Int -> String -> String
forall a. Int -> [a] -> [a]
take Int
12 (String -> String) -> String -> String
forall a b. (a -> b) -> a -> b
$ Int -> Char -> String -> String
forall a. Int -> a -> [a] -> [a]
rpad Int
12 Char
'0' String
x) Maybe Integer -> Maybe Integer -> Maybe Integer
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return Integer
0
                    TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
h Int
m (Integer -> Integer -> Pico
mkPico (Pico -> Integer
forall a b. (RealFrac a, Integral b) => a -> b
floor Pico
s) Integer
ps)
                Char
'Q' ->
                    if String -> Bool
forall (t :: * -> *) a. Foldable t => t a -> Bool
null String
x
                        then TimeOfDay -> Maybe TimeOfDay
forall a. a -> Maybe a
Just TimeOfDay
t
                        else do
                            Integer
ps <- (String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe (String -> Maybe Integer) -> String -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ Int -> String -> String
forall a. Int -> [a] -> [a]
take Int
12 (String -> String) -> String -> String
forall a b. (a -> b) -> a -> b
$ Int -> Char -> String -> String
forall a. Int -> a -> [a] -> [a]
rpad Int
12 Char
'0' String
x) Maybe Integer -> Maybe Integer -> Maybe Integer
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return Integer
0
                            TimeOfDay -> Maybe TimeOfDay
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeOfDay -> Maybe TimeOfDay) -> TimeOfDay -> Maybe TimeOfDay
forall a b. (a -> b) -> a -> b
$ Int -> Int -> Pico -> TimeOfDay
TimeOfDay Int
h Int
m (Integer -> Integer -> Pico
mkPico (Pico -> Integer
forall a b. (RealFrac a, Integral b) => a -> b
floor Pico
s) Integer
ps)
                Char
_ -> TimeOfDay -> Maybe TimeOfDay
forall a. a -> Maybe a
Just TimeOfDay
t
        in (TimeOfDay -> (Char, String) -> Maybe TimeOfDay)
-> Maybe TimeOfDay -> [(Char, String)] -> Maybe TimeOfDay
forall (m :: * -> *) a b.
Monad m =>
(a -> b -> m a) -> m a -> [b] -> m a
mfoldl TimeOfDay -> (Char, String) -> Maybe TimeOfDay
f (TimeOfDay -> Maybe TimeOfDay
forall a. a -> Maybe a
Just TimeOfDay
midnight)

rpad :: Int -> a -> [a] -> [a]
rpad :: Int -> a -> [a] -> [a]
rpad Int
n a
c [a]
xs = [a]
xs [a] -> [a] -> [a]
forall a. [a] -> [a] -> [a]
++ Int -> a -> [a]
forall a. Int -> a -> [a]
replicate (Int
n Int -> Int -> Int
forall a. Num a => a -> a -> a
- [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [a]
xs) a
c

mkPico :: Integer -> Integer -> Pico
mkPico :: Integer -> Integer -> Pico
mkPico Integer
i Integer
f = Integer -> Pico
forall a. Num a => Integer -> a
fromInteger Integer
i Pico -> Pico -> Pico
forall a. Num a => a -> a -> a
+ Rational -> Pico
forall a. Fractional a => Rational -> a
fromRational (Integer
f Integer -> Integer -> Rational
forall a. Integral a => a -> a -> Ratio a
% Integer
1000000000000)

instance ParseTime LocalTime where
    substituteTimeSpecifier :: Proxy LocalTime -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy LocalTime
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy LocalTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy LocalTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe LocalTime
buildTime TimeLocale
l [(Char, String)]
xs = Day -> TimeOfDay -> LocalTime
LocalTime (Day -> TimeOfDay -> LocalTime)
-> Maybe Day -> Maybe (TimeOfDay -> LocalTime)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (TimeLocale -> [(Char, String)] -> Maybe Day
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs) Maybe (TimeOfDay -> LocalTime)
-> Maybe TimeOfDay -> Maybe LocalTime
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> (TimeLocale -> [(Char, String)] -> Maybe TimeOfDay
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs)

enumDiff :: (Enum a) => a -> a -> Int
enumDiff :: a -> a -> Int
enumDiff a
a a
b = (a -> Int
forall a. Enum a => a -> Int
fromEnum a
a) Int -> Int -> Int
forall a. Num a => a -> a -> a
- (a -> Int
forall a. Enum a => a -> Int
fromEnum a
b)

getMilZoneHours :: Char -> Maybe Int
getMilZoneHours :: Char -> Maybe Int
getMilZoneHours Char
c
    | Char
c Char -> Char -> Bool
forall a. Ord a => a -> a -> Bool
< Char
'A' = Maybe Int
forall a. Maybe a
Nothing
getMilZoneHours Char
c
    | Char
c Char -> Char -> Bool
forall a. Ord a => a -> a -> Bool
<= Char
'I' = Int -> Maybe Int
forall a. a -> Maybe a
Just (Int -> Maybe Int) -> Int -> Maybe Int
forall a b. (a -> b) -> a -> b
$ Int
1 Int -> Int -> Int
forall a. Num a => a -> a -> a
+ Char -> Char -> Int
forall a. Enum a => a -> a -> Int
enumDiff Char
c Char
'A'
getMilZoneHours Char
'J' = Maybe Int
forall a. Maybe a
Nothing
getMilZoneHours Char
c
    | Char
c Char -> Char -> Bool
forall a. Ord a => a -> a -> Bool
<= Char
'M' = Int -> Maybe Int
forall a. a -> Maybe a
Just (Int -> Maybe Int) -> Int -> Maybe Int
forall a b. (a -> b) -> a -> b
$ Int
10 Int -> Int -> Int
forall a. Num a => a -> a -> a
+ Char -> Char -> Int
forall a. Enum a => a -> a -> Int
enumDiff Char
c Char
'K'
getMilZoneHours Char
c
    | Char
c Char -> Char -> Bool
forall a. Ord a => a -> a -> Bool
<= Char
'Y' = Int -> Maybe Int
forall a. a -> Maybe a
Just (Int -> Maybe Int) -> Int -> Maybe Int
forall a b. (a -> b) -> a -> b
$ (Char -> Char -> Int
forall a. Enum a => a -> a -> Int
enumDiff Char
'N' Char
c) Int -> Int -> Int
forall a. Num a => a -> a -> a
- Int
1
getMilZoneHours Char
'Z' = Int -> Maybe Int
forall a. a -> Maybe a
Just Int
0
getMilZoneHours Char
_ = Maybe Int
forall a. Maybe a
Nothing

getMilZone :: Char -> Maybe TimeZone
getMilZone :: Char -> Maybe TimeZone
getMilZone Char
c = let
    yc :: Char
yc = Char -> Char
toUpper Char
c
    in do
        Int
hours <- Char -> Maybe Int
getMilZoneHours Char
yc
        TimeZone -> Maybe TimeZone
forall (m :: * -> *) a. Monad m => a -> m a
return (TimeZone -> Maybe TimeZone) -> TimeZone -> Maybe TimeZone
forall a b. (a -> b) -> a -> b
$ Int -> Bool -> String -> TimeZone
TimeZone (Int
hours Int -> Int -> Int
forall a. Num a => a -> a -> a
* Int
60) Bool
False [Char
yc]

getKnownTimeZone :: TimeLocale -> String -> Maybe TimeZone
getKnownTimeZone :: TimeLocale -> String -> Maybe TimeZone
getKnownTimeZone TimeLocale
locale String
x = (TimeZone -> Bool) -> [TimeZone] -> Maybe TimeZone
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Maybe a
find (\TimeZone
tz -> (Char -> Char) -> String -> String
forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toUpper String
x String -> String -> Bool
forall a. Eq a => a -> a -> Bool
== TimeZone -> String
timeZoneName TimeZone
tz) (TimeLocale -> [TimeZone]
knownTimeZones TimeLocale
locale)

instance ParseTime TimeZone where
    substituteTimeSpecifier :: Proxy TimeZone -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy TimeZone
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy TimeZone
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy TimeZone
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe TimeZone
buildTime TimeLocale
l = let
        f :: Char -> String -> TimeZone -> Maybe TimeZone
        f :: Char -> String -> TimeZone -> Maybe TimeZone
f Char
'z' String
str (TimeZone Int
_ Bool
dst String
name)
            | Just Int
offset <- String -> Maybe Int
readTzOffset String
str = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just (TimeZone -> Maybe TimeZone) -> TimeZone -> Maybe TimeZone
forall a b. (a -> b) -> a -> b
$ Int -> Bool -> String -> TimeZone
TimeZone Int
offset Bool
dst String
name
        f Char
'z' String
_ TimeZone
_ = Maybe TimeZone
forall a. Maybe a
Nothing
        f Char
'Z' String
str TimeZone
_
            | Just Int
offset <- String -> Maybe Int
readTzOffset String
str = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just (TimeZone -> Maybe TimeZone) -> TimeZone -> Maybe TimeZone
forall a b. (a -> b) -> a -> b
$ Int -> Bool -> String -> TimeZone
TimeZone Int
offset Bool
False String
""
        f Char
'Z' String
str TimeZone
_
            | Just TimeZone
zone <- TimeLocale -> String -> Maybe TimeZone
getKnownTimeZone TimeLocale
l String
str = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just TimeZone
zone
        f Char
'Z' String
"UTC" TimeZone
_ = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just TimeZone
utc
        f Char
'Z' [Char
c] TimeZone
_
            | Just TimeZone
zone <- Char -> Maybe TimeZone
getMilZone Char
c = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just TimeZone
zone
        f Char
'Z' String
_ TimeZone
_ = Maybe TimeZone
forall a. Maybe a
Nothing
        f Char
_ String
_ TimeZone
tz = TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just TimeZone
tz
        in (Maybe TimeZone -> (Char, String) -> Maybe TimeZone)
-> Maybe TimeZone -> [(Char, String)] -> Maybe TimeZone
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl (\Maybe TimeZone
mt (Char
c, String
s) -> Maybe TimeZone
mt Maybe TimeZone -> (TimeZone -> Maybe TimeZone) -> Maybe TimeZone
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Char -> String -> TimeZone -> Maybe TimeZone
f Char
c String
s) (TimeZone -> Maybe TimeZone
forall a. a -> Maybe a
Just (TimeZone -> Maybe TimeZone) -> TimeZone -> Maybe TimeZone
forall a b. (a -> b) -> a -> b
$ Int -> TimeZone
minutesToTimeZone Int
0)

readTzOffset :: String -> Maybe Int
readTzOffset :: String -> Maybe Int
readTzOffset String
str = let
    getSign :: Char -> Maybe a
getSign Char
'+' = a -> Maybe a
forall a. a -> Maybe a
Just a
1
    getSign Char
'-' = a -> Maybe a
forall a. a -> Maybe a
Just (-a
1)
    getSign Char
_ = Maybe a
forall a. Maybe a
Nothing
    calc :: Char -> Char -> Char -> Char -> Char -> Maybe b
calc Char
s Char
h1 Char
h2 Char
m1 Char
m2 = do
        b
sign <- Char -> Maybe b
forall a. Num a => Char -> Maybe a
getSign Char
s
        b
h <- String -> Maybe b
forall a. Read a => String -> Maybe a
readMaybe [Char
h1, Char
h2]
        b
m <- String -> Maybe b
forall a. Read a => String -> Maybe a
readMaybe [Char
m1, Char
m2]
        b -> Maybe b
forall (m :: * -> *) a. Monad m => a -> m a
return (b -> Maybe b) -> b -> Maybe b
forall a b. (a -> b) -> a -> b
$ b
sign b -> b -> b
forall a. Num a => a -> a -> a
* (b
60 b -> b -> b
forall a. Num a => a -> a -> a
* b
h b -> b -> b
forall a. Num a => a -> a -> a
+ b
m)
    in case String
str of
        (Char
s : Char
h1 : Char
h2 : Char
':' : Char
m1 : Char
m2 : []) -> Char -> Char -> Char -> Char -> Char -> Maybe Int
forall b.
(Num b, Read b) =>
Char -> Char -> Char -> Char -> Char -> Maybe b
calc Char
s Char
h1 Char
h2 Char
m1 Char
m2
        (Char
s : Char
h1 : Char
h2 : Char
m1 : Char
m2 : []) -> Char -> Char -> Char -> Char -> Char -> Maybe Int
forall b.
(Num b, Read b) =>
Char -> Char -> Char -> Char -> Char -> Maybe b
calc Char
s Char
h1 Char
h2 Char
m1 Char
m2
        String
_ -> Maybe Int
forall a. Maybe a
Nothing

instance ParseTime ZonedTime where
    substituteTimeSpecifier :: Proxy ZonedTime -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy ZonedTime
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy ZonedTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy ZonedTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe ZonedTime
buildTime TimeLocale
l [(Char, String)]
xs = let
        f :: ZonedTime -> (Char, String) -> Maybe ZonedTime
f (ZonedTime (LocalTime Day
_ TimeOfDay
tod) TimeZone
z) (Char
's', String
x) = do
            Integer
a <- String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
x
            let
                s :: POSIXTime
s = Integer -> POSIXTime
forall a. Num a => Integer -> a
fromInteger Integer
a
                (Integer
_, Pico
ps) = Pico -> (Integer, Pico)
forall a b. (RealFrac a, Integral b) => a -> (b, a)
properFraction (TimeOfDay -> Pico
todSec TimeOfDay
tod) :: (Integer, Pico)
                s' :: POSIXTime
s' = POSIXTime
s POSIXTime -> POSIXTime -> POSIXTime
forall a. Num a => a -> a -> a
+ Rational -> POSIXTime
forall a. Fractional a => Rational -> a
fromRational (Pico -> Rational
forall a. Real a => a -> Rational
toRational Pico
ps)
            ZonedTime -> Maybe ZonedTime
forall (m :: * -> *) a. Monad m => a -> m a
return (ZonedTime -> Maybe ZonedTime) -> ZonedTime -> Maybe ZonedTime
forall a b. (a -> b) -> a -> b
$ TimeZone -> UTCTime -> ZonedTime
utcToZonedTime TimeZone
z (POSIXTime -> UTCTime
posixSecondsToUTCTime POSIXTime
s')
        f ZonedTime
t (Char, String)
_ = ZonedTime -> Maybe ZonedTime
forall a. a -> Maybe a
Just ZonedTime
t
        in (ZonedTime -> (Char, String) -> Maybe ZonedTime)
-> Maybe ZonedTime -> [(Char, String)] -> Maybe ZonedTime
forall (m :: * -> *) a b.
Monad m =>
(a -> b -> m a) -> m a -> [b] -> m a
mfoldl ZonedTime -> (Char, String) -> Maybe ZonedTime
f (LocalTime -> TimeZone -> ZonedTime
ZonedTime (LocalTime -> TimeZone -> ZonedTime)
-> Maybe LocalTime -> Maybe (TimeZone -> ZonedTime)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (TimeLocale -> [(Char, String)] -> Maybe LocalTime
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs) Maybe (TimeZone -> ZonedTime) -> Maybe TimeZone -> Maybe ZonedTime
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> (TimeLocale -> [(Char, String)] -> Maybe TimeZone
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs)) [(Char, String)]
xs

instance ParseTime UTCTime where
    substituteTimeSpecifier :: Proxy UTCTime -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy UTCTime
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy UTCTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy UTCTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe UTCTime
buildTime TimeLocale
l [(Char, String)]
xs = ZonedTime -> UTCTime
zonedTimeToUTC (ZonedTime -> UTCTime) -> Maybe ZonedTime -> Maybe UTCTime
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TimeLocale -> [(Char, String)] -> Maybe ZonedTime
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs

instance ParseTime UniversalTime where
    substituteTimeSpecifier :: Proxy UniversalTime -> TimeLocale -> Char -> Maybe String
substituteTimeSpecifier Proxy UniversalTime
_ = TimeLocale -> Char -> Maybe String
timeSubstituteTimeSpecifier
    parseTimeSpecifier :: Proxy UniversalTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy UniversalTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
timeParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe UniversalTime
buildTime TimeLocale
l [(Char, String)]
xs = Rational -> LocalTime -> UniversalTime
localTimeToUT1 Rational
0 (LocalTime -> UniversalTime)
-> Maybe LocalTime -> Maybe UniversalTime
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TimeLocale -> [(Char, String)] -> Maybe LocalTime
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
l [(Char, String)]
xs

buildTimeMonths :: [(Char, String)] -> Maybe Integer
buildTimeMonths :: [(Char, String)] -> Maybe Integer
buildTimeMonths [(Char, String)]
xs = do
    [Integer]
tt <-
        [(Char, String)]
-> ((Char, String) -> Maybe Integer) -> Maybe [Integer]
forall (t :: * -> *) (f :: * -> *) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [(Char, String)]
xs (((Char, String) -> Maybe Integer) -> Maybe [Integer])
-> ((Char, String) -> Maybe Integer) -> Maybe [Integer]
forall a b. (a -> b) -> a -> b
$ \(Char
c, String
s) ->
            case Char
c of
                Char
'y' -> (Integer -> Integer) -> Maybe Integer -> Maybe Integer
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
(*) Integer
12) (Maybe Integer -> Maybe Integer) -> Maybe Integer -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
'b' -> String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
'B' -> String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
_ -> Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return Integer
0
    Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return (Integer -> Maybe Integer) -> Integer -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ [Integer] -> Integer
forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a
sum [Integer]
tt

buildTimeDays :: [(Char, String)] -> Maybe Integer
buildTimeDays :: [(Char, String)] -> Maybe Integer
buildTimeDays [(Char, String)]
xs = do
    [Integer]
tt <-
        [(Char, String)]
-> ((Char, String) -> Maybe Integer) -> Maybe [Integer]
forall (t :: * -> *) (f :: * -> *) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [(Char, String)]
xs (((Char, String) -> Maybe Integer) -> Maybe [Integer])
-> ((Char, String) -> Maybe Integer) -> Maybe [Integer]
forall a b. (a -> b) -> a -> b
$ \(Char
c, String
s) ->
            case Char
c of
                Char
'w' -> (Integer -> Integer) -> Maybe Integer -> Maybe Integer
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
(*) Integer
7) (Maybe Integer -> Maybe Integer) -> Maybe Integer -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
'd' -> String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
'D' -> String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
                Char
_ -> Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return Integer
0
    Integer -> Maybe Integer
forall (m :: * -> *) a. Monad m => a -> m a
return (Integer -> Maybe Integer) -> Integer -> Maybe Integer
forall a b. (a -> b) -> a -> b
$ [Integer] -> Integer
forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a
sum [Integer]
tt

buildTimeSeconds :: [(Char, String)] -> Maybe Pico
buildTimeSeconds :: [(Char, String)] -> Maybe Pico
buildTimeSeconds [(Char, String)]
xs = do
    [Pico]
tt <- [(Char, String)] -> ((Char, String) -> Maybe Pico) -> Maybe [Pico]
forall (t :: * -> *) (f :: * -> *) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [(Char, String)]
xs (((Char, String) -> Maybe Pico) -> Maybe [Pico])
-> ((Char, String) -> Maybe Pico) -> Maybe [Pico]
forall a b. (a -> b) -> a -> b
$ \(Char
c, String
s) -> let
        readInt :: Integer -> Maybe Pico
        readInt :: Integer -> Maybe Pico
readInt Integer
t = do
            Integer
i <- String -> Maybe Integer
forall a. Read a => String -> Maybe a
readMaybe String
s
            Pico -> Maybe Pico
forall (m :: * -> *) a. Monad m => a -> m a
return (Pico -> Maybe Pico) -> Pico -> Maybe Pico
forall a b. (a -> b) -> a -> b
$ Integer -> Pico
forall a. Num a => Integer -> a
fromInteger (Integer -> Pico) -> Integer -> Pico
forall a b. (a -> b) -> a -> b
$ Integer
i Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
* Integer
t
        in case Char
c of
            Char
'h' -> Integer -> Maybe Pico
readInt Integer
3600
            Char
'H' -> Integer -> Maybe Pico
readInt Integer
3600
            Char
'm' -> Integer -> Maybe Pico
readInt Integer
60
            Char
'M' -> Integer -> Maybe Pico
readInt Integer
60
            Char
's' -> String -> Maybe Pico
forall a. Read a => String -> Maybe a
readMaybe String
s
            Char
'S' -> String -> Maybe Pico
forall a. Read a => String -> Maybe a
readMaybe String
s
            Char
_ -> Pico -> Maybe Pico
forall (m :: * -> *) a. Monad m => a -> m a
return Pico
0
    Pico -> Maybe Pico
forall (m :: * -> *) a. Monad m => a -> m a
return (Pico -> Maybe Pico) -> Pico -> Maybe Pico
forall a b. (a -> b) -> a -> b
$ [Pico] -> Pico
forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a
sum [Pico]
tt

instance ParseTime NominalDiffTime where
    parseTimeSpecifier :: Proxy POSIXTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy POSIXTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
durationParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe POSIXTime
buildTime TimeLocale
_ [(Char, String)]
xs = do
        Integer
dd <- [(Char, String)] -> Maybe Integer
buildTimeDays [(Char, String)]
xs
        Pico
tt <- [(Char, String)] -> Maybe Pico
buildTimeSeconds [(Char, String)]
xs
        POSIXTime -> Maybe POSIXTime
forall (m :: * -> *) a. Monad m => a -> m a
return (POSIXTime -> Maybe POSIXTime) -> POSIXTime -> Maybe POSIXTime
forall a b. (a -> b) -> a -> b
$ (Integer -> POSIXTime
forall a. Num a => Integer -> a
fromInteger Integer
dd POSIXTime -> POSIXTime -> POSIXTime
forall a. Num a => a -> a -> a
* POSIXTime
86400) POSIXTime -> POSIXTime -> POSIXTime
forall a. Num a => a -> a -> a
+ Pico -> POSIXTime
forall a b. (Real a, Fractional b) => a -> b
realToFrac Pico
tt

instance ParseTime DiffTime where
    parseTimeSpecifier :: Proxy DiffTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy DiffTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
durationParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe DiffTime
buildTime TimeLocale
_ [(Char, String)]
xs = do
        Integer
dd <- [(Char, String)] -> Maybe Integer
buildTimeDays [(Char, String)]
xs
        Pico
tt <- [(Char, String)] -> Maybe Pico
buildTimeSeconds [(Char, String)]
xs
        DiffTime -> Maybe DiffTime
forall (m :: * -> *) a. Monad m => a -> m a
return (DiffTime -> Maybe DiffTime) -> DiffTime -> Maybe DiffTime
forall a b. (a -> b) -> a -> b
$ (Integer -> DiffTime
forall a. Num a => Integer -> a
fromInteger Integer
dd DiffTime -> DiffTime -> DiffTime
forall a. Num a => a -> a -> a
* DiffTime
86400) DiffTime -> DiffTime -> DiffTime
forall a. Num a => a -> a -> a
+ Pico -> DiffTime
forall a b. (Real a, Fractional b) => a -> b
realToFrac Pico
tt

instance ParseTime CalendarDiffDays where
    parseTimeSpecifier :: Proxy CalendarDiffDays
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy CalendarDiffDays
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
durationParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe CalendarDiffDays
buildTime TimeLocale
_ [(Char, String)]
xs = do
        Integer
mm <- [(Char, String)] -> Maybe Integer
buildTimeMonths [(Char, String)]
xs
        Integer
dd <- [(Char, String)] -> Maybe Integer
buildTimeDays [(Char, String)]
xs
        CalendarDiffDays -> Maybe CalendarDiffDays
forall (m :: * -> *) a. Monad m => a -> m a
return (CalendarDiffDays -> Maybe CalendarDiffDays)
-> CalendarDiffDays -> Maybe CalendarDiffDays
forall a b. (a -> b) -> a -> b
$ Integer -> Integer -> CalendarDiffDays
CalendarDiffDays Integer
mm Integer
dd

instance ParseTime CalendarDiffTime where
    parseTimeSpecifier :: Proxy CalendarDiffTime
-> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
parseTimeSpecifier Proxy CalendarDiffTime
_ = TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String
durationParseTimeSpecifier
    buildTime :: TimeLocale -> [(Char, String)] -> Maybe CalendarDiffTime
buildTime TimeLocale
locale [(Char, String)]
xs = do
        Integer
mm <- [(Char, String)] -> Maybe Integer
buildTimeMonths [(Char, String)]
xs
        POSIXTime
tt <- TimeLocale -> [(Char, String)] -> Maybe POSIXTime
forall t. ParseTime t => TimeLocale -> [(Char, String)] -> Maybe t
buildTime TimeLocale
locale [(Char, String)]
xs
        CalendarDiffTime -> Maybe CalendarDiffTime
forall (m :: * -> *) a. Monad m => a -> m a
return (CalendarDiffTime -> Maybe CalendarDiffTime)
-> CalendarDiffTime -> Maybe CalendarDiffTime
forall a b. (a -> b) -> a -> b
$ Integer -> POSIXTime -> CalendarDiffTime
CalendarDiffTime Integer
mm POSIXTime
tt